Series III: Ephemera, not dated

This collection contains various papers and ephemera belonging to Henry Abbott, as well as papers about Abbott, specifically in the year after his death in the 1940s.

The majority of the collection is comprised of official documents belonging to Abbott. There are a number of patents issued to Abbott during the second half of the 19th Century, as well as copyrights issued by the Library of Congress, and a mortgage and bond issued to Abbott.

There are a number of ephemeral items in this collection. This includes stationary with various addresses embossed or printed on the paper from locations in New York and New Jersey. These are presumably business or personal addresses of Henry Abbott. Furthermore, there are business cards and a name plate, all with Abbott's name. There is also a printing block that depicts the street view of Abbott's Maiden Lane facilities during the aftermath of the blizzard that hit the Northeast United States in March of 1888, also known as the Great Blizzard of 1888, or the Great White Hurricane.

There are a limited number of personal papers belonging to Abbott. Included in this collection are a few small booklets of the Maiden Lane Historical Society, which mostly list officers and members of that society. Also included is a pamphlet written by Abbott about the calculagraph, an invention of Abbott's used to calculate the time of toll calls.

There is also a limited amount of correspondence. Most of the correspondence in this collection are small notes or birthday poems. There is one undated note that is written by Judson Blake. This letter is to Henry Abbott's wife, Laura De Camp Abbott, and is regarding the engagement of Abbott's daughter to Judson Blake.

This collection also contains a few items regarding Abbott's death. Henry Abbott died in December of 1943, and there are a couple of newspaper clippings about his passing and mention Abbott's achievements in the watch industry. Furthermore, there are a few letters between Abbott's estate (presumably handled by Abbott's daughter, Elsie A. Blake), regarding a matter of resolving the loan of a few items.